Hello Mark!
On 09 Feb 98, Mark Carrig wrote to Rich Lockyer:
 MC> Just butting in here a bit, hope you don't mind...
 MC> I have a set of Ruby's in my blackface Bassman. I think they are awfully
 MC> good.. Bought them on a whim, 'cause the GT's were not in stock, and was
 MC> quite surprised at both the tone, as well as reliability of them...
The Ruby power tubes in my Carvin came from the USSR... the preamp tubes were 
Chinese.
 MC> Ok, here's my question. I have a Fender Blues JR, that's totally killer.
I absolutely love mine, and if I could only have one amp, that would be the 
one.
 MC> Probably about time to re-tube, and I would like to put the Ruby's in
 MC> it...
 MC> Question is, how do you bias the Jr ??
I'd have to look at it again, but I think it is fixed... major PITA to 
adjust, and usually not worth the trouble.  They're biased cold enough at the 
factory to where a little variation in the tubes isn't going to cause them to 
blow up or destroy your tone.  You may be able to improve the tone by bumping 
it up a bit, but at "the edge", you'll have to keep an eye on the bias to 
make sure it doesn't start to smoke something.
C-ya! Rich
--- GoldED 2.40
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